Move RTCFileLogger to webrtc/base/objc.

BUG=
R=jiayl@webrtc.org, tkchin@webrtc.org

Review URL: https://codereview.webrtc.org/1692243003 .

Patch from Jon Hjelle <hjon@andyet.net>.

Cr-Commit-Position: refs/heads/master@{#11754}

talk/app/webrtc/legacy_objc_api.gyp

@@ -43,7 +43,6 @@
             'objc/RTCDataChannel.mm',
             'objc/RTCEnumConverter.h',
             'objc/RTCEnumConverter.mm',
-            'objc/RTCFileLogger.mm',
             'objc/RTCI420Frame+Internal.h',
             'objc/RTCI420Frame.mm',
             'objc/RTCICECandidate+Internal.h',

webrtc/base/BUILD.gn

@@ -635,6 +635,8 @@ if (is_ios) {
       "objc/RTCCameraPreviewView.m",
       "objc/RTCDispatcher.h",
       "objc/RTCDispatcher.m",
+      "objc/RTCFileLogger.h",
+      "objc/RTCFileLogger.mm",
       "objc/RTCLogging.h",
       "objc/RTCLogging.mm",
       "objc/RTCMacros.h",

webrtc/base/base.gyp

@@ -36,6 +36,8 @@
             'objc/NSString+StdString.mm',
             'objc/RTCDispatcher.h',
             'objc/RTCDispatcher.m',
+            'objc/RTCFileLogger.h',
+            'objc/RTCFileLogger.mm',
             'objc/RTCLogging.h',
             'objc/RTCLogging.mm',
             'objc/RTCMacros.h',

webrtc/base/objc/RTCFileLogger.h

@@ -0,0 +1,69 @@
+/*
+ *  Copyright 2015 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#import <Foundation/Foundation.h>
+
+typedef NS_ENUM(NSUInteger, RTCFileLoggerSeverity) {
+  kRTCFileLoggerSeverityVerbose,
+  kRTCFileLoggerSeverityInfo,
+  kRTCFileLoggerSeverityWarning,
+  kRTCFileLoggerSeverityError
+};
+
+typedef NS_ENUM(NSUInteger, RTCFileLoggerRotationType) {
+  kRTCFileLoggerTypeCall,
+  kRTCFileLoggerTypeApp,
+};
+
+// This class intercepts WebRTC logs and saves them to a file. The file size
+// will not exceed the given maximum bytesize. When the maximum bytesize is
+// reached, logs are rotated according to the rotationType specified.
+// For kRTCFileLoggerTypeCall, logs from the beginning and the end
+// are preserved while the middle section is overwritten instead.
+// For kRTCFileLoggerTypeApp, the oldest log is overwritten.
+// This class is not threadsafe.
+@interface RTCFileLogger : NSObject
+
+// The severity level to capture. The default is kRTCFileLoggerSeverityInfo.
+@property(nonatomic, assign) RTCFileLoggerSeverity severity;
+
+// The rotation type for this file logger. The default is
+// kRTCFileLoggerTypeCall.
+@property(nonatomic, readonly) RTCFileLoggerRotationType rotationType;
+
+// Disables buffering disk writes. Should be set before |start|. Buffering
+// is enabled by default for performance.
+@property(nonatomic, assign) BOOL shouldDisableBuffering;
+
+// Default constructor provides default settings for dir path, file size and
+// rotation type.
+- (instancetype)init;
+
+// Create file logger with default rotation type.
+- (instancetype)initWithDirPath:(NSString *)dirPath
+                    maxFileSize:(NSUInteger)maxFileSize;
+
+- (instancetype)initWithDirPath:(NSString *)dirPath
+                    maxFileSize:(NSUInteger)maxFileSize
+                   rotationType:(RTCFileLoggerRotationType)rotationType
+    NS_DESIGNATED_INITIALIZER;
+
+// Starts writing WebRTC logs to disk if not already started. Overwrites any
+// existing file(s).
+- (void)start;
+
+// Stops writing WebRTC logs to disk. This method is also called on dealloc.
+- (void)stop;
+
+// Returns the current contents of the logs, or nil if start has been called
+// without a stop.
+- (NSData *)logData;
+
+@end

webrtc/base/objc/RTCFileLogger.mm

@@ -1,28 +1,11 @@
 /*
- * libjingle
- * Copyright 2015 Google Inc.
+ *  Copyright 2015 The WebRTC project authors. All Rights Reserved.
  *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- *  1. Redistributions of source code must retain the above copyright notice,
- *     this list of conditions and the following disclaimer.
- *  2. Redistributions in binary form must reproduce the above copyright notice,
- *     this list of conditions and the following disclaimer in the documentation
- *     and/or other materials provided with the distribution.
- *  3. The name of the author may not be used to endorse or promote products
- *     derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
- * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
- * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
- * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
  */
 
 #import "RTCFileLogger.h"

webrtc/webrtc_examples.gyp

@@ -199,6 +199,7 @@
           'type': 'static_library',
           'dependencies': [
             'apprtc_common',
+            'base/base.gyp:rtc_base_objc',
             '../talk/app/webrtc/legacy_objc_api.gyp:libjingle_peerconnection_objc',
             'socketrocket',
           ],
@@ -247,6 +248,7 @@
             ],
           },
           'export_dependent_settings': [
+            'base/base.gyp:rtc_base_objc',
             '../talk/app/webrtc/legacy_objc_api.gyp:libjingle_peerconnection_objc',
           ],
           'conditions': [